麻烦老师帮我改一下,一头雾水

麻烦老师帮我改一下,一头雾水

http://img1.sycdn.imooc.com//climg/5d3157bf000138f308730386.jpg

package com.imooc.domain;

public class Food {
private String id;
private String name;
private String taste;
private String path;
private String price;
private String describe;
public Food() {
}
public Food(String id, String name, String taste, String path,String price, String describe) {
	super();
	this.id = id;
	this.name = name;
	this.taste = taste;
	this.path = path;
	this.price = price;
	this.describe = describe;
}
/**
 * @return the id
 */
public String getId() {
	return id;
}
/**
 * @param id the id to set
 */
public void setId(String id) {
	this.id = id;
}
/**
 * @return the name
 */
public String getName() {
	return name;
}
/**
 * @param name the name to set
 */
public void setName(String name) {
	this.name = name;
}
/**
 * @return the taste
 */
public String getTaste() {
	return taste;
}
/**
 * @param taste the taste to set
 */
public void setTaste(String taste) {
	this.taste = taste;
}
/**
 * @return the path
 */
public String getPath() {
	return path;
}
/**
 * @param path the path to set
 */
public void setPath(String path) {
	this.path = path;
}
/**
 * @return the price
 */
public String getPrice() {
	return price;
}
/**
 * @param price the price to set
 */
public void setPrice(String price) {
	this.price=price;
}
/**
 * @return the describe
 */
public String getDescribe() {
	return describe;
}
/**
 * @param describe the describe to set
 */
public void setDescribe(String describe) {
	this.describe = describe;
}
@Override
public String toString() {
	return "Food [id=" + id + ", name=" + name + ", taste=" + taste + ", path=" + path + ", price=" + price
			+ ", describe=" + describe + "]";
}


}
package com.imooc.domain;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
//菜品数据处理
public class FoodDaoImpl {
	
//存放菜品信息的列表
private static final List<Food> db=new ArrayList<Food>();
private String msg;

/**
 * @param msg the msg to set
 */
public void setMsg(String msg) {
	this.msg = msg;
}
/**
 * @return the msg
 */
public String getMsg() {
	return msg;
}
/**
 * @return the db
 */
public static List<Food> getDb() {
	return db;
}

//添加菜品
public void addFood(Food food) {
	db.add(food);
}
//查询所有菜品信息
public List<Food> getAllFood(){
	if(db.isEmpty()) {
		System.out.println("菜单是空的");
		return null;
	}else {
			return db;
	}
}
//根据菜名查询菜品信息
public Food getFoodByName(String foodName) {
	Food food=new Food();
	for(int i=0;i<db.size();i++) {
		if(db.get(i).getName().equals(foodName)) {
			food=db.get(i);
			break;
		}
	}
	return food;
}
//根据菜品id查询菜品信息
public Food getFoodById(String id) {
	Food food=new Food();
	for(int i=0;i<db.size();i++) {
		if(db.get(i).getId().equals(id)) {
			food=db.get(i);
			break;
		}
	}
	return food;
}
//菜品修改
public void updateFood(Food newFood) {
	for(int i=0;i<db.size();i++) {
		if(db.get(i).getId().equals(newFood.getId())) {
			db.remove(i);
			db.add(newFood);
			System.out.println("菜品以更新完成!");
			break;//跳出循环
		}
	}
}
//根据菜品id进行删除
public void deleteFoodById(String id) {
	if(db.isEmpty()) {
		System.out.println("菜单是空的!");
		return;//return使整个函数返回,后面的不管是循环里面还是循环外面的都不执行
	}else {
		for(int i=0;i<db.size();i++) {
			if(db.get(i).getId().equals(id)) {
				db.remove(i);
				break;
			}
		}
	}
}

}
package com.imooc.servlet;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import com.imooc.domain.Food;
import com.imooc.domain.FoodDaoImpl;
import com.imooc.util.UploadUtils;

/**
 * 添加菜品Servlet implementation class FoodAddServlet
 */
public class FoodAddServlet extends HttpServlet {

	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		FoodDaoImpl FoodDaoImpl1 = (FoodDaoImpl) this.getServletContext().getAttribute("FoodDaoImpl");
		List<Food> foodList = (List<Food>) this.getServletContext().getAttribute("foodlist");
		if (foodList.isEmpty()) {
			System.out.println("从servletContext中获得的集合是空的");
		}
		// 定义一个Map集合用于保存接收到的数据
		Map<String, String> map = new HashMap<String, String>();
		
		try {
			// 创建一个磁盘文件项工厂对象
			DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
			// 2创建一个核心的解析类
			ServletFileUpload servletFileUpload = new ServletFileUpload(diskFileItemFactory);
			// 3、解析request请求,返回List集合,集合中存放的是FileItem对象
			List<FileItem> list=servletFileUpload.parseRequest(request);
			// 4.遍历list,查看传递过来的数据是什么
			String url=null;
			for(FileItem fileItem:list) {
				if(fileItem.isFormField()) {
					//普通表单项
					//接收表单项参数的值
					String name=fileItem.getFieldName();
					String value=fileItem.getString("UTF-8");
					//存放在map中
					map.put(name, value);
				}else {
					//文件上传项
					//获得文件上传的名称
					String fileName=fileItem.getName();
					if(fileName!=null&&"".equals(fileName)) {
						//通过工具类获得唯一文件名
						String uuidFileName=UploadUtils.getUUIDFileName(fileName);
						//获得文件上传的数据
						InputStream is=fileItem.getInputStream();
						//获得文件上传的路径
						String path=this.getServletContext().getRealPath("/upload");
						//将输入流对接到输出流
						url=path+"\\"+uuidFileName;
						OutputStream os=new FileOutputStream(url);
						int len=0;
						byte[] b=new byte[1024];
						while((len=is.read(b))!=-1) {
							os.write(b,0,len);
						}
						is.close();
						os.close();
						
					}
				}
			}
			if(foodList==null) {
				System.out.println("从ContextServlet中获得的菜单是空的");
		    if(foodList!=null) {
		    	//检验网页上添加的菜名是否存在
		    	for(Food food:foodList) {
		    		if(food.getId().equals(map.get("id"))) {
		    			request.setAttribute("msg", "菜名已存在");
		    			//菜名已存在,跳转到添加界面
		    			request.getRequestDispatcher("/addFood.jsp").forward(request, response);
		    			return;
		    		}
		    	}
		    	
		    }
		    //新添加的菜名可上传,封装相关数据
		    Food food=new Food();
		    food.setId(map.get("id"));
		    food.setName(map.get("foodName"));
		    food.setTaste(map.get("taste"));
		    food.setPath(url);
		    food.setPrice(map.get("price"));
		    food.setDescribe(map.get("description"));
		    if(FoodDaoImpl1==null) {
		    	FoodDaoImpl1=new FoodDaoImpl();
		   
		    //添加到全局对象FoodDaoImp1中
		    FoodDaoImpl1.addFood(food);
		    this.getServletContext().setAttribute("FoodDaoImpl1", FoodDaoImpl1);
		    //跳转到展示食物界面
		    request.getRequestDispatcher("/showFoodList.jsp").forward(request, response);
			}
			 }
		} catch (FileUploadException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

}
package com.imooc.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.imooc.domain.Food;
import com.imooc.domain.FoodDaoImpl;

/**
 * Servlet implementation class FoodDeleteServlet
 */
public class FoodDeleteServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public FoodDeleteServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		FoodDaoImpl FoodDaoImpl1=(FoodDaoImpl) this.getServletContext().getAttribute("FoodImple1");
		List<Food> foodList=FoodDaoImpl1.getDb();
		String deleteFoodId=request.getParameter("id");
		String msg=FoodDaoImpl1.getMsg();
		boolean flag=false;
		for(Food food:foodList) {
			if(food.getId().equals(deleteFoodId)) {
			flag=true;
				
			}
			if(flag==false) {
				msg="输入的id不存在,请重新输入";
				request.setAttribute("msg", msg);
			}else {
				FoodDaoImpl1.deleteFoodById(deleteFoodId);
				this.getServletContext().setAttribute("FoodImpl1", FoodDaoImpl1);
				msg="根据id删除菜品已完成";
				request.setAttribute("msg", msg);
				request.getRequestDispatcher("/showFoodList.jsp").forward(request, response);
			}
		}
	}

	}
package com.imooc.servlet;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import com.imooc.domain.Food;
import com.imooc.domain.FoodDaoImpl;
import com.imooc.util.UploadUtils;

/**
 * Servlet implementation class FoodUpdateServlet
 */
public class FoodUpdateServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public FoodUpdateServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		FoodDaoImpl FoodDaoImpl1=(FoodDaoImpl) this.getServletContext().getAttribute("FoodDaoImpl");
		List<Food> foodList=FoodDaoImpl1.getDb();
		if(foodList.isEmpty()) {
			System.out.println("从ServletContext中获得的list是空的");
		}
		Map<String,String> map=new HashMap<String,String>();
		
		try {
			//1创建磁盘拱辰享文件
			DiskFileItemFactory diskFileItemFactory=new DiskFileItemFactory();
			//2创建一个核心解析类
			ServletFileUpload servletFileUpload=new ServletFileUpload(diskFileItemFactory);
			//3解析request请求,返回的是List集合,List集合中存放的是FileItem对象
			List<FileItem> list=servletFileUpload.parseRequest(request);
			//4遍历List集合,判断FileItem类型
			String url=null;
			for(FileItem fileItem:list) {
				if(fileItem.isFormField()) {
					String name=fileItem.getName();
					String value=fileItem.getString();
					map.put(name, value);
					
				}else {
					String fileName=fileItem.getName();
					if(fileName!=null&&!"".equals(fileName)) {
						//通过工具类获取唯一文件名
						String uuidFileName=UploadUtils.getUUIDFileName(fileName);
						//获得文件上传的数据
						InputStream is=fileItem.getInputStream();
						//获得文件上传的路径
						String path=this.getServletContext().getRealPath("/img");
						url=path+"\\"+uuidFileName;
						OutputStream os=new FileOutputStream(url);
						int len=0;
						byte[] b=new byte[1024];
						while((len=is.read(b))!=-1) {
							os.write(b,0,len);
						}
						is.close();
						os.close();
						
	
					}
				}
			}
			//检验菜名
			Iterator<Food> iterator=foodList.iterator();
			boolean flag=false;
			Food testFood=null;
			while(iterator.hasNext()) {
				testFood=iterator.next();
				if(testFood.getId().equals(map.get("id"))) {
					flag=true;
					break;
				}
			}
			if(flag==false) {
				String msg="您要修改的id:"+map.get("id")+"菜单里没有";
				request.setAttribute("msg", msg);
				request.getRequestDispatcher("/updateFood.jsp").forward(request, response);
			}else {
				Food food=new Food();
				food.setId(map.get("id"));
				food.setName(map.get("name"));
				food.setTaste(map.get("taste"));
				food.setPath(url);
				food.setPrice(map.get("price"));
				food.setDescribe(map.get("describe"));
				FoodDaoImpl1.updateFood(food);
				System.out.println("更新后的food为"+food);
				this.getServletContext().setAttribute("FoodDaoImpl1", FoodDaoImpl1);
				request.getRequestDispatcher("/showFood.jsp").forward(request, response);
				
				
			}
		} catch (FileUploadException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

}
package com.imooc.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.imooc.domain.Food;
import com.imooc.domain.FoodDaoImpl;

/**
 * 初始化Servlet implementation class InitServlet
 */
public class InitServlet extends HttpServlet {
	 @Override
	public void init() throws ServletException {
		//创建FoodDaoImpl对象
		 FoodDaoImpl FoodDaoImpl=new FoodDaoImpl();
		 //创建一个list集合用来接收DaoImpl中的list
		 List<Food> foodList=FoodDaoImpl.getDb();
		 //将初始化的FoodDaoImpl对象及其list表存放到ServletContext中
		 this.getServletContext().setAttribute("FoodDaoImpl1", FoodDaoImpl);
		 this.getServletContext().setAttribute("foodList", foodList);
		 
	}
	

}
package com.imooc.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.imooc.domain.Food;
import com.imooc.domain.FoodDaoImpl;

/**
 * Servlet implementation class SelectServlet
 */
public class SelectServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public SelectServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		   FoodDaoImpl FoodDaoImpl1=(FoodDaoImpl) this.getServletContext().getAttribute("FoodDaoImpl");
		   List<Food> list=FoodDaoImpl1.getDb();
		   String foodName=request.getParameter("foodName");
		   Food foodSearch=FoodDaoImpl1.getFoodByName(foodName);
		   boolean flag=false;
		   if(foodSearch!=null) {
			   flag=true;
		   }
		   if(flag==false) {
			   String msg="对不起,您要查找的"+foodName+"在我们家菜单没有";
			   request.setAttribute("msg", msg);
			   request.getRequestDispatcher("/selectFoodByName.jsp").forward(request, response);
			   
		   }else {
			   request.getSession().setAttribute("foodSearch", foodSearch);
			   request.getRequestDispatcher("/showFoodByName.jsp").forward(request, response);
		   }
	}

}
package com.imooc.util;

import java.util.UUID;

public class UploadUtils {
/**
 * 生成唯一文件名
 */
	public static String getUUIDFileName(String fileName) {
		//将文件名前面部分进行截取
		int idx=fileName.lastIndexOf(".");
		String extention=fileName.substring(idx);
		String uuidFileName=UUID.randomUUID().toString().replace("-", "")+extention;
		return uuidFileName;
	}
	
}
<%@ page contentType="text/html;charset=utf-8"%>
<!DOCTYPE html>
<html>
<head>
<%
    String basePath = request.getScheme() + "://" + request.getServerName() +
     ":" + request.getServerPort() + request.getContextPath();
%>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>添加菜品</title>
<style type="text/css">

</style>
</head>
<body>
	<center>
		<h1>菜品添加</h1>
		<%
		  String msg="";
		if(request.getAttribute("msg")!=null){
			msg=(String)request.getAttribute("msg");
		}
		%>
		<h2 style="color:green;font-weight:bolder;">${requestScope.msg }</h2>
		<form action="<%=basePath%>/add" method="post" enctype="multipart/form-data">
			<table border="1px" width="400px" cellspacing="0px" cellpadding="0px">
				<tr>
					<td>菜品&nbsp;ID</td>
					<td><input type="text" name="id"></td>
				</tr>
				<tr>
					<td>菜&nbsp;&nbsp;名</td>
					<td><input type="text" name="foodName"></td>
				</tr>
				<tr>
					<td>口&nbsp;&nbsp;味</td>
					<td>
						<input type="radio" name="taste" value="香辣">香辣
						<input type="radio" name="taste" value="微辣">微辣
						<input type="radio" name="taste" value="麻辣">麻辣
						<input type="radio" name="taste" value="不辣">不辣
					</td>
				</tr>
				<tr>
					<td>菜品图片</td>
					<td><input type="file" name="foodImage"></td>
				</tr>
				<tr>
					<td>价&nbsp;&nbsp;格</td>
					<td><input type="text" name="price"></td>
				</tr>
				<tr>
					<td>菜品描述</td>
					<td>
						<textarea name="description"></textarea>
					</td>
				</tr>
				<tr   style="text-align:center;width:20px">
					<td colspan="2">
						<input type="submit" value="添加">
						<input type="reset" value="重置">
					</td>
				</tr>
			</table>
		</form>
	</center>
</body>
</html>
<%@ page contentType="text/html;charset=utf-8"%>
<!DOCTYPE html>
<html>
<head>
<%
    String menu=request.getContextPath();
    String basePath = request.getScheme() + "://" + request.getServerName() +
     ":" + request.getServerPort() + request.getContextPath();
%>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>菜品删除(根据ID删)</title>
<style type="text/css">

</style>
</head>
<body>
	<center>
		<h1>菜品删除(根据ID删除)</h1>
		<h2 style="color:red;font-weight:bolder;">${requestScope.msg}</h2>
		<form action="<%=basePath%>/delete" method="post">
			<table width="400px" border="1px" cellspacing="0px" cellpadding="0px">
				<tr>
					<td>菜品ID</td>
					<td><input type="text" name="id"></td>
				</tr>
				<tr>
					<td colspan="2" style="text-align:center"><input type="submit" value="删除"></td>
				</tr>
			</table>
		</form>
	</center>
</body>
</html>
<%@ page contentType="text/html;charset=utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<p><a href="addFood.html" target="main">菜品添加</a></p>
<p><a href="selectFood.html" target="main">菜品查询</a></p>
<p><a href="updateFood.html" target="main">菜品修改</a></p>
<p><a href="deleteById.html" target="main">菜品删除</a></p>
</body>
</html>
<%@ page contentType="text/html;charset=utf-8"%>
<!DOCTYPE html>
<html>
<head>
<%
    String basePath = request.getScheme() + "://" + request.getServerName() +
     ":" + request.getServerPort() + request.getContextPath();
%>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>菜品查询选项页面</title>
<style type="text/css">

</style>
</head>
<body>
	<center>
		<p><a href="/showFoodList.jsp">查询所有菜品信息</a></p>
		<p><a href="/selectFoodByName.jsp">菜名查询</a></p>
	</center>
</body>
</html>
<%@ page contentType="text/html;charset=utf-8"%>
<!DOCTYPE html>
<html>
<head>
<%
    String basePath = request.getScheme() + "://" + request.getServerName() +
     ":" + request.getServerPort() + request.getContextPath();
%>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>菜名查询</title>
<style type="text/css">

</style>
</head>
<body>
	<center>
		<h1>菜名查询</h1>
		<%
		  String msg="";
		if(request.getAttribute("msg")!=null){
			msg=(String)request.getAttribute("msg");
		}
		%>
		<form action="<%=basePath%>/select" method="post">
			<input type="hidden" name="type" value="2">
			<table width="400px" border="1px" cellspacing="0px" cellpadding="0px">
				<tr>
					<td>菜名</td>
					<td><input type="text" name="foodName"></td>
				</tr>
				<tr>
					<td colspan="2" style="text-align:center"><input type="submit" value="查询"></td>
				</tr>
			</table>
		</form>
	</center>
</body>
</html>
<%@ page import=java.* %>
<%@ page contentType="text/html;charset=utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>菜品管理系统</title>
</head>
<frameset rows="20%,*">
	<frame src="./top.html"></frame>
	<frameset cols="10%,*">
		<frame src="./left.html"></frame>
		<frame name="main"></frame>
	</frameset>
</frameset>
</html>
<%@ import=java.* %>
<%@ page contentType="text/html;charset=utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html>
<html>
<head>
<%
    String basePath = request.getScheme() + "://" + request.getServerName() +
     ":" + request.getServerPort() + request.getContextPath();
%>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>菜品信息展示</title>
<style type="text/css">

</style>
</head>
<body>
	<center>
		<h1>菜品查询</h1>
		<table border="1px" cellspacing="0px" cellpadding="0px" width="800px">
			<thead>
				<tr>
					<th>菜品ID</th>
					<th>菜名</th>
					<th>口味</th>
					<th>菜品图片</th>
					<th>价格</th>
					<th>菜品描述</th>
				</tr>
			</thead>
			<tbody>
			<c:forEach items="${applicationScope.FoodDaoImpl1.getDb() }" var="food">
				
				<tr>
					<td>${food.Id }</td>
					<td>${food.name }</td>
					<td>${food.taste }</td>
					<td><img src=${food.path}></td>
					<td>${food.price }</td>
					<td>${food.describe }</td>
				</tr>
            </c:forEach>
			</tbody>
		</table>
	</center>
</body>
</html>
<%@ page contentType="text/html;charset=utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<center>
<h1>菜品后台管理系统</h1>
</center>
</body>
</html>
<%@ page contentType="text/html;charset=utf-8"%>
<!DOCTYPE html>
<html>
<head>
<%
    String basePath = request.getScheme() + "://" + request.getServerName() +
     ":" + request.getServerPort() + request.getContextPath();
%>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>菜品修改(根据菜品ID进行修改)</title>
<style type="text/css">

</style>
</head>
<body>
	<center>
		<h1>根据菜品ID修改</h1>
		<form action="<%=basePath%>/FoodUpdateServlet" method="post" enctype="multipart/form-data">
			<table border="1px" width="400px" cellspacing="0px" cellpadding="0px">
				<tr>
					<td>修改ID</td>
					<td><input type="text" name="id"></td>
				</tr>
				<tr>
					<td>菜&nbsp;&nbsp;名</td>
					<td><input type="text" name="foodName"></td>
				</tr>
				<tr>
					<td>口&nbsp;&nbsp;味</td>
					<td>
						<input type="radio" name="taste" value="香辣">香辣
						<input type="radio" name="taste" value="微辣">微辣
						<input type="radio" name="taste" value="麻辣">麻辣
						<input type="radio" name="taste" value="不辣">不辣
					</td>
				</tr>
				<tr>
					<td>菜品图片</td>
					<td><input type="file" name="foodImage"></td>
				</tr>
				<tr>
					<td>价&nbsp;&nbsp;格</td>
					<td><input type="text" name="price"></td>
				</tr>
				<tr>
					<td>菜品描述</td>
					<td>
						<textarea name="description"></textarea>
					</td>
				</tr>
				<tr   style="text-align:center;width:20px">
					<td colspan="2">
						<input type="submit" value="修改">
						<input type="reset" value="重置">
					</td>
				</tr>
			</table>
		</form>
	</center>
</body>
</html>
麻烦帮我改好,谢谢


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1回答
好帮手慕阿满 2019-07-19 14:44:59

同学你好,报错404是路径找不到问题。问一下同学是想访问那个页面,server.jsp页面吗?建议同学将该页面的名称写上去再试试。

如果我的回答解决了你的疑惑,请采纳。祝:学习愉快~

  • 访问那个还是不行,看我的代码回答,谢谢
    2019-07-19 16:48:27
  • 页面出来了,但是点开添加就是404错误
    2019-07-19 16:55:13
  • 在同学的这个问答中http://class.imooc.com/course/qadetail/135935,看到同学的问题已经解决了是吗。很棒哦。祝:学习愉快~
    2019-07-19 19:26:36
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